require 'logger'
class PostsController < ApplicationController
  #前置过滤器
  before_action :set_post, only: [:show, :edit, :update, :destroy]

  #除except定义的方法外全部都需要进行用户权限验证
  before_action :authenticate_user!, except: [:show, :index]

=begin rdoc
  可能是因为控制器要使用父类的初始化方法，所以这里必须要使用super
=end
  def initialize
    super
    @log = Logger.new(STDOUT)
  end

  # GET /posts
  # GET /posts.json
  def index
    @log.info("客户端主机名 %s " % request.host)
    @log.info("客户端访问的端口 %s" % request.port)
    @log.info("客户端IP地址 %s " % request.remote_ip)
    post = Post.new
    @posts = post.getAll

  end


  # GET /posts/1
  # GET /posts/1.json
  def show
  end

  # GET /posts/new
  def new
    @post = Post.new
  end

  # GET /posts/1/edit
  def edit
  end

  # POST /posts
  # POST /posts.json
  def create
    @post = Post.new(post_params)

    respond_to do |format|
      if @post.save
        format.html { redirect_to @post, notice: 'Post was successfully created.' }
        format.json { render :show, status: :created, location: @post }
      else
        format.html { render :new }
        format.json { render json: @post.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /posts/1
  # PATCH/PUT /posts/1.json
  def update
    respond_to do |format|
      if @post.update(post_params)
        format.html { redirect_to @post, notice: 'Post was successfully updated.' }
        format.json { render :show, status: :ok, location: @post }
      else
        format.html { render :edit }
        format.json { render json: @post.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /posts/1
  # DELETE /posts/1.json
  def destroy
    @post.destroy
    respond_to do |format|
      format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
      format.json { head :no_content }
    end
  end



  private
    # Use callbacks to share common setup or constraints between actions.
    def set_post
      @post = Post.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def post_params
      params.require(:post).permit(:name, :title, :context)
    end
  
  def to_s

  end
  def method_missing pd
    puts "对不起，在Post模型类中不存在#{pd.to_s}实例方法"
  end

  def self.method_missing pd
    puts "对不起，在Post模型类中不存在#{pd.to_s}类方法"
  end
end
